Open framework–based Brønsted acid–Lewis base interfaces boost proton transfer in the fuel cells

Researchers developed composite ionomers combining nitrogen-rich open-framework nanosheets with Nafion polymers to create Brønsted acid–Lewis base interfaces, greatly accelerating proton transport in proton-exchange membrane fuel cells. This innovation increases proton conductivity by over sixfold and achieves higher power densities at low platinum loadings, overcoming a key limitation in fuel cell efficiency.

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